CVE-2026-3902Disclosure(djangoproject / django)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch djangoproject django systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Tarek Nakkouch for reporting this issue.

djangoproject CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Patch / fix

Other references

https://groups.google.com/g/django-announce

Weakness type (CWE)

CWE-290

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

django

Threat summary

Patch or workaround signal is available
5 mentions across 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 3 classified signals
General: 1 classified signal
Peaked 2d ago at 3 mentions (2026-04-07); latest day: 1
5 total mentions across 3 days

Affected systems

Vendors

djangoproject

Products

django

Deep dive

Activity timeline5 mentions / 3d

Signal classification3 categories

Disclosure

360.0%

Patch

120.0%

General

120.0%

Referenced assets5 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-07	3	Disclosure2Patch1
2026-04-10	1	General1
2026-04-19	1	Disclosure1

Full discourse5 posts

Open Source Security mailing list@oss_security184d
Patch
5 CVEs fixed in Django https://www.openwall.com/lists/oss-security/2026/04/07/10 CVE-2026-3902: ASGI header spoofing via underscore/hyphen conflation CVE-2026-4277: Privilege abuse in GenericInlineModelAdmin CVE-2026-4292: Privilege abuse in ModelAdmin.list_editable + next tweet
Post summary
The tweet announces that five Django CVEs have been fixed, providing brief technical details for several of them and confirming patch availability.
10050638
4.6K followersView on X
CERT-PY@CERTpy181d
General
⚠️ Vulnerabilidades en productos Django ❗ CVE-2026-3902 ❗ CVE-2026-33034 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-productos-django-2/ https://t.co/Y4RdtjMbku
Post summary
A brief tweet that lists two Django product CVEs and directs readers to a CERT page for further information, but it lacks additional technical details, patches, or exploitation evidence.
00010101
6.6K followersView on X
PulsePatch.io@pulsepatchio172d
Disclosure
A high-severity Django vulnerability, CVE-2026-3902, allows ASGI header spoofing via underscore/hyphen conflation. Review Django and ASGI server configurations. #Django #ASGI #Security https://www.pulsepatch.io/posts/cve-2026-3902-django-asgi-header-spoofing
Post summary
The post announces the high‑severity Django CVE‑2026‑3902 vulnerability that allows ASGI header spoofing through underscore/hyphen conflation and urges readers to review server configurations.
0000060
12 followersView on X
Infoflowcloud@infoflowcloud184d
Disclosure
🚨*CVE* CVE-2026-3902 An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguou… https://www.cve.org/CVERecord?id=CVE-2026-3902 ----- Traducción: CVE-2026-3902 Se … http://infoflow.cloud`
Post summary
The tweet announces CVE-2026-3902, outlining affected software versions and the capability to spoof headers via ASGIRequest, without indicating an exploit, active exploitation, or mitigation.
0000030
67 followersView on X
CVE@CVEnew184d
Disclosure
CVE-2026-3902 An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguou… https://www.cve.org/CVERecord?id=CVE-2026-3902
Post summary
The text reports CVE‑2026‑3902 as a header‑spoofing issue in specific software versions, providing a brief technical description but offering no PoC, exploit code, or patch information.
00000179
57.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	djangoproject	django	-	-	-

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What researchers are saying

CVE-2026-3902

Open Source Security mailing list@oss_securityPatch

The tweet announces that five Django CVEs have been fixed, providing brief technical details for several of them and confirming patch availability.

CERT-PY@CERTpyGeneral

A brief tweet that lists two Django product CVEs and directs readers to a CERT page for further information, but it lacks additional technical details, patches, or exploitation evidence.

PulsePatch.io@pulsepatchioDisclosure

The post announces the high‑severity Django CVE‑2026‑3902 vulnerability that allows ASGI header spoofing through underscore/hyphen conflation and urges readers to review server configurations.

Infoflowcloud@infoflowcloudDisclosure

The tweet announces CVE-2026-3902, outlining affected software versions and the capability to spoof headers via ASGIRequest, without indicating an exploit, active exploitation, or mitigation.

CVE@CVEnewDisclosure

The text reports CVE‑2026‑3902 as a header‑spoofing issue in specific software versions, providing a brief technical description but offering no PoC, exploit code, or patch information.